Dear Sir,
Continuing about fexpm1 and flog1p, kindly note that in vocabulary
math.functions the definition of log1+ given as 1 + log, defeats the purpose of
giving flog1p in that 1 + log will always give inaccurate values when x <<1.
This definition of log1+ should be removed from the vocabulary math.functions
and flog1+ be retained in vocabulary math.libm.
Similarly for expm1 function.
Thanks and regards,
SJain
Agra, India
-------- Original Message --------
From: SJain <z...@ymail.com>
Sent: 13 June 2020 3:08:00 PM IST
To: LANG Factor <factor-talk@lists.sourceforge.net>
Subject: fexpm1 missing in math.libm
Dear Sir,
The function e^x - 1 , called fexpm1, is provided for in both C libm and x87
instructions, just like it's counterpart log1p (ln(1+x)). While flog1+ is
provided in factor vocabulary math.libm, expm1 is missing. Both functions are
useful when x is small compared to 1.
Kindly provide expm1 also.
Thanks and regards,
Sanjay Jain
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